Stereotype-matrix-making press.



R. T. JOHNSTON.

STEREOTYPB MATRIX MAKING ranss.

I APPLICATION FILED APR. 10, 1905. RENEWED NOV. 28, 1913- 1,103,210. Patented July 14,-191

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STEREOTYPE MATRIX MAKING PRESS. APPLICATION FILED 3.10, 1905. RENEWED NOV. as. 1913. l, 1 03,2 1 09 Patented July 14, 1914,

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R. T. JOHNSTON. STBREOTYPE MATRIX MAKING PR'ESS.

APPLICATION FILED APR. x0, 1905. RENEWED NOV. 2a, 1913.

1,108,210. I Patented July14,1914.

4 SHEETSSHEET 3.

R. T. JOHNSTON.

STEREOTYPE MATRIX MAKING PRESS.

APPLICATION, FILED APR. 10, 1905. RENEWED NOV. 28, mg.

1,1 03,2 109 Patented July 14, 1914,

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ROBERT '1. JOHNSTON, TAUNTON, MASSACHUSETTS, ASSIG-NOR, BY MESNE ASSIGN- ITEMS, TO' THE 'A'UTOIPLATE COMPANY OF AMERICA, OF JERSEY CITY, NEW JERSEY, CORPORATION OF NEW JERSEY. p

STEREOTYPE-MATRDi-MAKING PRESS.

Specification of Letters Patent.

Patented July it, rain.

Application filed. April 10, 1905, Serial No. 254,658. Renewed November 28, 1913. Serial No. 803,603.

To all. whom it may ooncemm J Beit known that I, ROBERT. T. 'JonNsToN, a citizen of the UnitedStates, residing at Taunton, in the county of Bristol and State of Massachusetts, have invented a new and useful Stereotype-Matrix-Ma-king Press, of which the following is aspecificat-ion. The object of this invention is, to provide a new and improved stereotype matr1xmaking press. The press now usually employed for this purpose consists of a steamheated table cooperating -with,.which IS a hand-press. T have discovered that this. arrangement can be much improved if a steam cylinder and piston are usedto aotu-. ate the platen or movable part of the press, because it is necessary to have steam in the table to dry the matrix, and by using) steam to actuate the platen, the flowing will e held to the type with a pressure which will cause the press to follow the matrix as it shrinks and dries, without attention. on the part of the operator. With the oldhand-press, the operator usually has to set the press up sev eral tinies during the operation, WhlCll is apt to distort the matrix. By using a yield ing pressure like that obtained from steam or compressed air, the platenwill automatl cally follow up the matrix.

Referring to the drawings and in detail,

-Figure 1 is a side elevation of an apparatus constructed to embody my invention. Fig. 2

is an'end view thereof. Fig. 3 is a sectional elevation through the operating means for the platen. Fig. 4 is a sectional perspective view illustrating the way the matrix is applied to the type, and Figs. 5' to 11 inclusive are elevations of modifications hereinafter referred to.

Referring to the drawing and in detail, B designates an upright steam boiler which has the. usual attachments. Resting on top of the boiler is a hollow table T which is also supported at its other end by legs L. The table is connected by pipes 10 and 11 to the boiler so that the surface of the ta jl ole he table at its end may be provided with an adjustable safety valve and steam gage. Secured to the sides of the table are brackets 12-12. Connected to the top of these brackets is an arch 13in which is formed a cylinder 14.

P designates the platen which is guided between the brackets 1212 by suitable plns. Av piston rod 15 is connected to the top of the platen, and toa piston 16 working in the cylinder 14, as shown in Fig. 3.

Sec1 1red to the top of. the arch 13 is a proectmg cylinder 17. The piston rod 15 extends up into this cylinder 17 and hasa pro ect1on 18 at its upper end. i

A spring 19 is arranged under this pro.

jection to bear on the top of the cylinder.- The cylinder is connected to the boiler by a pipe 20, which pipe has a valve 21. An

outlet pipe 22 having a valve 23 is also connected to the cylinder. 'A pressure gage 220 isprovided in the outlet p1pe22 to connect with the cylinder so that the pressure on the plston can be determined.

In operation -when the form of type isreceived, it is laid on the end of the table extending to the right as shown in Fi 1.'

firmly into the form of type while the matrixdries. By using this mechanism great pressure is obtained, which pressure'may be varied at will, and by which the'platen can be very quickly set or put into operation without manual labor. Moreover, it will be noticed that by leaving the pressureon in the cylinder as the matrix is drying, the

platen will automatically follow up the matrix as it shrinks, without attention on the part of the operator, whereby a particularly accurateand good matrix will be obtained.- After the matrix hasdried and set,

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the inlet valve 21 is closed and the outlet valve 23 is opened, when the spring 19 will quickly raise the platen so that the parts can be pulled out from under the press and the completed matrix taken .out.

The steam cylinder, piston and spring may be arranged invarious ways tooperate the platen. In Fig. 5 the cylinder andpiston are arranged at the side of the press to operate on a pivoted lever 24 which bears on the top of the platen. The rod 25 extends up from'the platen through the arch, and

thespring 19 is. arranged thereon' In Fig.

6 another modification is shown, inwhich the cylinder and piston are arranged .in a framing 26 above the arch. In Fig. '7 the cylinder and piston are arranged horizontally, and toggle arms 27'27 are employed to actuate the platen. In Fig. 8 the platen is operated'by a heavy lever 28. The piston and plston-rod are rigidly secured to the table, and the cylinder is arranged. to slide on the piston to actuate the lever 28, the spring 19-in this instance being arranged under the lever. In Fig. 9 the piston is secured to the arch and the piston-rod is made hollow so that steam can be admitted or exhausted therethrough. The cylinder 29 in this instance is formed directly with the platen, and. springs 30 are arranged at the edges of the platen to lift the same when the pressure is relieved, In Fig. 10 the cylinder is arranged underneath the'table and the piston is connected to an arm or frame 31 which connects by rods 32 passing through lugs on the side of the table up to the platen. The springs 19 in this instance are arranged on said rods between the lugs and the platen. In Fi 11 a double acting piston is shown whic is connected by a lever 33 to operate the platen. Two inlet .,'pipes are employed, one at each end of the cylinder, and two outlet pipes are employed, one at each end of the cylinder. These pipes have suitable valves. Pressure is admitted on top of the piston to set the platen,

and when the platen is to be raised the pressure at the top'is shut oil", and the top of the cylinder is connected so that the steam therein can escape, and pressure is admitted under the piston to raise the same. In some instances compressed air may be advantageously'eniployed to get the yielding action before described.

' Many other modifications may be made by a skilled mechanic without departingfrom the scope of my invention as expressed in the claims.

-drying table mounted thereon, a platen cooperating therewith to form a press, a

steam cylinder and piston connected to operate the platen, and a spring for raising the platen. V

3. The combination of a boiler, a matrixdrying table mounted thereon, a platen cooperatin therewith to form a press, an arch connecte to said table, a cylinder formed in said arch, a piston working'in said cylinder, a connection from said boiler to said cylinder, a small projecting cylinder arranged'on top of the steam cylinder, a piss ton-rod extending between the platen and piston and also up into the small cylinder, a projection on said piston rod, and a spring engaging said projection and acting to raise the platen.

4. The combination of a boiler, a matrix,

drying table mounted thereon, connections for admitting steam from the boiler intothe matrix drying table, -aplaten cooperating with said table to form a press, and a steam cylinder and piston connected to said boiler for operating the platen,

In testimony whereof Iflhave hereunto set my'hand, in the presence of two subscribling witnesses.

ROBERT T. JOHNSTON. Witnesses:.

Fnnn J. VIEWEG, O. J. ROBERTSON. 

